<template>
    <div  >
       <nav-bar>
           <div slot="left" class="back" @click="backClick">
               <img src="~assets/img/common/back.svg" alt="">
           </div>
           <div slot="center" class="title">
           <div v-for="(item,index) in titles" :key="index" 
           class="title-item" 
           :class="{active:index=== currentIndex}" @click="titleClick(index)">{{item}}</div>
           </div></nav-bar>
    </div>
</template>

<script>
import NavBar from 'components/common/navbar/NavBar'

export default {
    name:'DetailNavBar',
    components:{
      NavBar
       
    },
    data(){
        return{
            titles:['商品','参数','评论','推荐'],
            currentIndex:0
        }
    },
    methods:{
        titleClick(index){
            this.currentIndex=index;
            this.$emit('titleClick',index)
        },
        //返回上一层
        backClick(){
            this.$router.go(-1)
        }
    }
    
}
</script>

<style scoped>
.title{
    display: flex;
    font-size: 14px;
}
.title-item{
    flex: 1;
    background-color: #fff;
   
}
.active{
    color:var(--color-high-text)
}
.back img{
    vertical-align: middle;
}

</style>